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Test Types

Specimen

ASTM D3846 describes the method for determining the inplane shear strength of reinforced plastic composite materials. These specimens are typically thermosetting plastics with reinforcements that widely vary in type and thickness ranging from 2.54 mm to 6.60 mm.

The test method is similar to that of ASTM D695, Test Method for Compressive Properties of Rigid Plastics, except that in the ASTM D3846 method, failure of the specimen occurs in shear between two centrally located notches that are machined halfway through the thickness of the specimen and spaced a fixed distance apart on opposing faces. The same compression fixture is used in both methods and placed between two hardened steel compression platens. Due to the high compressive forces expected, we usually recommend a dual column electromechanical test frame configured with Bluehill® software for this application.

Bluehill 2 material testing software is the second generation of the original fully-integrated modular software package that provides easy tailored application solutions for today's laboratory managers and test technicians. In addition to the standard testing applications including tensile, compression, flexural, peel, tear and friction, Bluehill 2 has several new and unique added features.

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